Okay I don't see how it would be possible how they could have made ~600 BTC in less then a day.
The chances of them even having 600 BTC in bets in one day when they were averaging 100 BTC in bets per day are in itself slim.
This is speculation, however I think their stats on their site are not accurate, and are trying to lure people to invest in their site and gamble on their site.
I am not sure if that might be true. So almost every major dice site out there has investments less than 1000 BTC. And hardly any of those is in profits of more than 100 BTC. Even if DB was to come back, I doubt specially after the incident anyone would risk their coins on it.
The Bankroll of the site gained 600 BTC today. If mateo was manl, then it would mean he gave up 600 BTC to revive the site in the hope to lure in more investors. And looking at the stats on other sites, and specially after the incident, I doubt people would risk their BTC, and specially 600 BTC would be a big amount to aim for , for a site that had been proven to be rigged. And it is pretty much impossible for the site to get more than 600 BTC of investment after all this. And even after that he would have to activate mateo again(assuming its him) to take down the entire BR again.
Plus if he wanted to steal more BTC he would have just done it before, during the time of the incident, before people could divest.
They said they planned on trying to get private investors to invest in their site. If they have a positive profit showing on their site then they will have an easier time getting private investors to invest, investors who would more likely agree to leave their investment in their site for longer periods of time.